请根据下列材料写篇对话:大明和李林去餐馆吃饭。大明吃饺子,李林吃面条,他们每人一瓶牛奶。一共花了30元。
LiLin: A cola for me, too.
LiLin: How much is it?
Casher: It's thirty yuan.
LiLin: Here you are.
Casher: Thank you. Enjoy your meal!
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